Wheel construction.



R. B. WOODWORTH.

WHEEL CONSTRUCTION.

APPLICATION FILED Novv 1c. 1910 1,020,069, Patented Mar. 12, 1912.

. 2 WITNESSES INVENTOR l rllllhlhll @FFICE.

ROBERT WOODKVQRTIH, OF PITTQIBURGH, PENNSYLVANIA.

YVEEEWL CQNSTIL'UGTIDN.

To all whom it. may concern:

'Bc itlmown that I, llonnirr B. oonwoa'rn', Pittsburgh. in the county at Allegheny and State of lennsylwmia. have in vented certain new and et'ul improvements in l /hecl Constructions, of which the following is a full, clear. and exact description, reference being had to the accompany" ing drawing forming part of this slaw-itication.

My invention relates to the construction Another object of this invention is to provide a metal band whee having a tug wheel of improved construction secured to, so as to form part of, the band wheel.

In the accompanying thawing, Figure 1 is a side elevation of a band wheel constructed and arranged in accordance with my invention. Fig. 2 is an end elevation of the same, the top half of this figure being in section. Fig. 3 is a detail in side elevation of the periphery oi. hand wheel in which the rim is made 'up of rolled metal side plates with wooden blolrk inserts lornn ing a wooden periphery or rim. Fig. t is "a sectional end elevation showing the conmodified form of constrm'lnm ot thc rim portion of the wheel.

In the accompanying drawing. a combined. blind and tug wheel i' shown in which radially extending spolrt 9, it'ormcd as shown, of rolled metal channels, are employed to connect the buiit-up center or hub with the rim .3: of the band wheel, and in: which the tug wheel 5 formed by securing the tug wheel rim tobrackcts 6 which project horizontally from the sides of the spokes 2 of the band wheel.

, In forming the hub or center of the wheel, a series oi rol ed rectal plates 3, t 333, 3", are secured to her in'plaoe upon the oppo Specification of Letters Eatent.

site flanges of the metal channels which form the spokes 2 of the wheel. The plates 3 are bored axially to form an opening or hole in which the shaftof the band wheel is l zeycd or otherwise secured.

In the construction shown in Figs. 1 and 2, a rolled metal channel 7 is curved or bent to the desired diameter to form the rim of the wheel. the toes of the flanges 7 oil the channel extending outwardly. Removably secured in the depression or groove formed by the flanges 7 of the rim channel 7 is a series of wooden blocks 8 which are bolted in place so as to form a segmental wooden rim for the band wheel. '.l1e channel 7 forming the rim of the wheel is riveted or bolted to gusset plates 9 which are secured by rivets or bolts to the outer end of the radially extending channels 2 forming the spokes of the wheel.

The tug wheel 5 is formed by bending :1 rolled metal channel 5 to the desired curvature and securing the bent channel to the brackets (i which are secured in place on the spokes 3 at an intermediate point in their length, the ln'ackets fi extending beyond the face of the flanges of the channels forming the spokes 2. Secured in the groove formed by the outwardly extending flanges on the channels 5 are wooden inserts or blocks 5" which form the segmental wooden rim or periphery of the tug Wheel. The rim of the tug wheel, as shown, has two V-shaped grooves in its outer surface for the bull rope of the drilling rig.

In the construction shown in Figs. 3 and d, the bent channel forming part of the rim portion of the wheel is omitted, and segmental metal plates 10 are secured to the opposite chaimcl flanges at in ends of the radially extending channels 2 itorming the spokes ot' the wheel. Secured between the metal plates 10 are Wooden inserts or blocks 11 which in this case form the rim of the Wheel,- the inserts being held in place by through bolts 12, which extend through the plates 10 in holding the wooden blocks in place.

In the modification shown in Fig. 5 a channel 13 with the toes of its flanges extending inwardly is bent to the desired diameter of the wheel and the so-.formd rim ol the wheel is secured to the channel flanges at the ends of the channels 2 forming the- Patented Mar. 12, 1912. Application filed November 18, 1910. Serial No. 592,709.

, As the friction fpulley of the sand reel is generally made 0. metal, Wooden rims are provided on the band Wheel so as to afford a desirable contacting surface for this friction reel.

1 through the soformed openings.

The advantages of my invention Will apparent to those skilled in the art. Instead of the heavy cumbersome Wooden construction heretoforeused in such drilling rigs, a light Wheelof very great strength is provided inwhich standard rolled metal products are employed to form the Wheel. By forming all parts of the Wheel of standard rolled metal products, easily obtainable at any time, the Wheel can be constructed with a minimum amount of machine Work.

By the use of a plurality of rolled metal plates, which are readily obtainable at any time, to form the hub of the Wheel, instead of the specially formed cast metal centers heretofore used, a cheap, easily formed center of very greatly increased strength is obtained, and the strength of the Wheel is very largely increased over that of the Wooden constructions heretofore used.

Modifications in the construction and arrangement of the parts may be made Without departing from my invention.

1 claim i I I 1. A built up band and tug Wheel comprising radially extending integral spokes formed of rolled metal shapes and connectmemes ing a Wrought metal rim and hub portions, horizontally projecting rolled metal brackets on said spokes, and a tug Wheel rim formed of rolled metal and secured in place on said brackets.

2. A. band and tug Wheel comprising a hub and rim and radially extending spokes formed of rolled metal shapes connectingthe rim and hub'portions, horizontally ro-;

jecting brackets on said spokes, a re led metal channel bent to the desired curvature fixed to said brackets, and a series of segmental Wooden blocks secured in place on the metal channel rim of the tug Wheel, the

so-formed Wooden rim having a peripheral ll-shaped groove therein.

49A band and tug Wheel comprising a hub and. rim and radially extending spokes formed of rolled metal shapes connecting the rim and hub portions,'horizontally projecting brackets on said spokes, a rolled metal channel bent to the desired curvature fixed to said brackets, and a series of segmental Wooden blocks secured in place onso-forined Wooden rim having a plurality of peripheral V-shaped grooves therein.

In testimony whereof, I have hereunto set my hand. 4

RQBERT l3. l VOQDVJQRTH. lvitnessesz Roxinr A. MARBLE, GEE-RUDE SoHoTTn. 

